This is dangerously oversimplified. It takes no account of source files with multiple tracks, so you'll probably end up accidentally throwing some away. The "q

This is dangerously oversimplified. It takes no account of source files with multiple tracks, so you'll probably end up accidentally throwing some away. The "quality" slider implies that if you move it to the right, you'll get more quality. But higher numbers of the crf value are lower quality, not higher. The resize function takes no account of the original aspect ratio of the source video, so you'll probably squash things. Audio extraction ignores whatever the source codec is, missing the opportunity of extracting the source codec without recompressing. Additionally the built-in "aac" codec is very low quality and should not be used. ("libflac" is probably a better choice than "flac", too.)